Whether you tweet or not, log into Facebook or skip it, you know that social media is everywhere. You just can’t get away from it. There are references on prime-time television, news stories all over the place and special deals at stores large and small. If you think you’re surrounded by this stuff, brace yourself: it’s more pervasive than you realize.

As I was scanning my Twitter stream this week, I saw a tweet by social media company FourSquare, a service that allows people to “check in” at different locations, track their friends and, if they choose, share their locations with the world.

The tweet contained a bold claim, specifically, that the service had recorded check-ins in every country in the world in November … even the most reclusive one:

With 8 check-ins in North Korea, foursquare users visited EVERY country in November! Bouvet Island, you’re one of just 5 territories left…less than a minute ago via webfoursquare
foursquare

%Gallery-109277%While FourSquare has yet to accumulate the user base of Twitter (175 million) or Facebook (550 million), it has grown quickly in the past year, going from a mere 725,000 in March to 5 million only 10 days ago … and it’s adding 25,000 every day.

In addition to letting your friends and followers know where you are, FourSquare has some tools that are useful for both occasional and frequent travels, including the ability to record and share tips at each of the locations you visit. While it’s fun to get check-ins at places that are prestigious, fun or remote, nothing says “for the win” – #FTW in Twitter parlance – quite like a North Korea check-in.

So, are you on FourSquare? What’s your craziest check-in? Leave a comment below to get the ball rolling! I have to admit: mine aren’t all that adventurous, but I am the mayor of an Upper West Side bodega. Okay, that doesn’t compare to a DPRK check-in!